diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/plat-omap/include/mach/mcbsp.h | 9 | ||||
| -rw-r--r-- | arch/arm/plat-omap/mcbsp.c | 50 |
2 files changed, 59 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/include/mach/mcbsp.h b/arch/arm/plat-omap/include/mach/mcbsp.h index ceaf9eee61b..2544aa5bccd 100644 --- a/arch/arm/plat-omap/include/mach/mcbsp.h +++ b/arch/arm/plat-omap/include/mach/mcbsp.h @@ -389,6 +389,15 @@ int omap_mcbsp_init(void); void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config, int size); void omap_mcbsp_config(unsigned int id, const struct omap_mcbsp_reg_cfg * config); +#ifdef CONFIG_ARCH_OMAP34XX +void omap_mcbsp_set_tx_threshold(unsigned int id, u16 threshold); +void omap_mcbsp_set_rx_threshold(unsigned int id, u16 threshold); +#else +static inline void omap_mcbsp_set_tx_threshold(unsigned int id, u16 threshold) +{ } +static inline void omap_mcbsp_set_rx_threshold(unsigned int id, u16 threshold) +{ } +#endif int omap_mcbsp_request(unsigned int id); void omap_mcbsp_free(unsigned int id); void omap_mcbsp_start(unsigned int id, int tx, int rx); diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c index e9dd70320f7..081f2eace92 100644 --- a/arch/arm/plat-omap/mcbsp.c +++ b/arch/arm/plat-omap/mcbsp.c @@ -198,6 +198,56 @@ void omap_mcbsp_config(unsigned int id, const struct omap_mcbsp_reg_cfg *config) } EXPORT_SYMBOL(omap_mcbsp_config); +#ifdef CONFIG_ARCH_OMAP34XX +/* + * omap_mcbsp_set_tx_threshold configures how to deal + * with transmit threshold. the threshold value and handler can be + * configure in here. + */ +void omap_mcbsp_set_tx_threshold(unsigned int id, u16 threshold) +{ + struct omap_mcbsp *mcbsp; + void __iomem *io_base; + + if (!cpu_is_omap34xx()) + return; + + if (!omap_mcbsp_check_valid_id(id)) { + printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); + return; + } + mcbsp = id_to_mcbsp_ptr(id); + io_base = mcbsp->io_base; + + OMAP_MCBSP_WRITE(io_base, THRSH2, threshold); +} +EXPORT_SYMBOL(omap_mcbsp_set_tx_threshold); + +/* + * omap_mcbsp_set_rx_threshold configures how to deal + * with receive threshold. the threshold value and handler can be + * configure in here. + */ +void omap_mcbsp_set_rx_threshold(unsigned int id, u16 threshold) +{ + struct omap_mcbsp *mcbsp; + void __iomem *io_base; + + if (!cpu_is_omap34xx()) + return; + + if (!omap_mcbsp_check_valid_id(id)) { + printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); + return; + } + mcbsp = id_to_mcbsp_ptr(id); + io_base = mcbsp->io_base; + + OMAP_MCBSP_WRITE(io_base, THRSH1, threshold); +} +EXPORT_SYMBOL(omap_mcbsp_set_rx_threshold); +#endif + /* * We can choose between IRQ based or polled IO. * This needs to be called before omap_mcbsp_request(). |